BENGALURU : Elena Rybakina defended her former coach Stefano Vukov after he was provisionally suspended by the governing body of women's tennis pending an investigation into a potential breach of its code of conduct, saying on Saturday he had not mistreated her. Rybakina, who claimed the 2022 Wimbledon title under Vukov, ended their five-year partnership in August, days ahead of the U.S. Open, before she appointed Novak Djokovic's former mentor Goran Ivanisevic for the new season. She rehired